<s>
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
Channel	I-Protocol
ID	I-Protocol
(	O
TLS	B-Protocol
Channel	I-Protocol
ID	I-Protocol
,	O
previously	O
known	O
as	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
–	I-Protocol
Origin	I-Protocol
Bound	I-Protocol
Certificates	I-Protocol
TLS-OBC	O
)	O
is	O
a	O
draft	O
RFC	O
proposal	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
(	O
TLS	O
)	O
extension	O
that	O
aims	O
to	O
increase	O
TLS	O
security	O
by	O
using	O
certificates	O
on	O
both	O
ends	O
of	O
the	O
TLS	O
connection	O
.	O
</s>
<s>
Notably	O
,	O
the	O
client	O
is	O
permitted	O
to	O
dynamically	O
create	O
a	O
local	O
,	O
self-signed	B-Protocol
certificate	I-Protocol
that	O
provides	O
additional	O
security	O
.	O
</s>
<s>
Token	O
Binding	O
is	O
an	O
evolution	O
of	O
the	O
TLS	B-Protocol
Channel	I-Protocol
ID	I-Protocol
feature	O
,	O
and	O
the	O
IETF	O
draft	O
has	O
Microsoft	O
and	O
Google	O
as	O
authors	O
.	O
</s>
